g73 real life performance results

[Keep]

Okay I got my g73 up installed and running. I have read through some of the posts on here before that mentioned some numbers. I thought we could put them all in the same thread so others looking to purchase can have some ideas of what they are getting.

Here is my setup.

Garage 22x22 out of the 4 walls and the ceiling, the ceiling is 3/4 insulated due to a bedroom above and the back wall is fully insulated. The left wall is 1/2 insulated. The right wall is dry walled but I found no insulation in the wall as it is an outside wall. The door is wood, and the front wall is not insulated.

Kinda of hard to explain but here is a pic of the front just above the door:

As you can see the front 1/3rd of the garage is not drywalled or insulated, well not yet anyway. I think that covers the specs.

Heater is installed in the back right hand corner.

Start temp 2 degrees. (36f)
End temp 13 degress (55f)
Heating time 1:15

This was only the 2nd time I have used it. The first 5 degrees seemed to take the longest, once it hit around 8 degrees it seemed to heat up faster.

 

[70Chevy]

Keep,

How often does it come on once at your desired temp 13/55 ?

 

[jvitez]

What was the outdoor temp during this test?

 

[Falcon67]

I've been on vacation and have the heater set to keep things around 65F. It runs 2-4 times an hour or so. Outside temp has been from mid 40s to around 18 at night. To crank it from from dead cold - depends on how long the shop has been sitting unheated. If it's been "all week" and it's Saturday, maybe 1-2 hours to bring it up to 65 from around 40.

Shop is 480 sq/ft. Insulation covers the walls (2x4 stud) and most of the ceiling but there is no vapor barrier or any attempt to create one. There are 4 each 4x4 panels for attic access that are just 1/2 ply with no insulation. Walls have a partial covering with OSB.

 

[Keep]

Okay it was 0 degrees outside (32f) not a strong wind but breezy.

I actually turned it down once it hit 55 it was warm enough to work out there by then. It cycled on once but I did not catch the time on it.

I will play with it again this weekend when I am back out there. Its -16 right now and its just to damn cold to even try to warm it up.

 

[jvitez]

That helps, thanks. I'm still trying to get a handle on btu requirements for my garage. I'm in the process of insulating it. Currently it's -12C in the garage, -18C outside.

 

[burger]

I have a G73 in my 24x24 garage. Insulated walls and ceiling. Ceiling is 10' at side walls and 14' at center (cathedral). Two insulated 8'x8' doors and one insulated 4'x8' entry door. Weather-stripping around doors has not yet been installed.

It's enough heater that if left on high, it would cook you out of the garage in below freezing weather.

I would estimate that it takes about 20 minutes for a 10° temperature rise.

So I don't have to start work in a cold garage, I put a 3-way switch in the house that trips a contactor in the garage to fire up the heater.


Hope this helps,
Ed

 

[keflaman]

My garage is 1240sf with 10' ceilings and shaped like an "L" with my heater hung at the corner of the two longest walls. The inside is drywalled with R38 ceilings, R19 Walls, two 8X10 doors (one insulated, one not), insulated man-door, double pane windows and everything is sealed.

I have my heater set on the third position (of ten) and temps probably average pretty close to freezing outside with a low of 10F and high of 43F. The inside stays at a steady 52F-54F.

My wife pays the electric bill and I never told her the heater runs 24/7, so when the bill arrived last week I watched for her reaction when she opened the envelope. She glanced at it, gave a "That's not too bad" look and tossed the bill over to the side. I'll let things lie where they are.

 

[Falcon67]

I have a bit of "spouse backfire" to deal with, but it's my fault. I drummed it into her head over the years that "electric heat is bad ju-ju!" Now I have to sing a tune called "it's only $0.05 if it ran a full hour and it only runs a few minutes an hour". I still get the hairy eyeball. First bill with a couple of weeks run time hasn't got here yet. I would be shocked if it drove the bill up $10. The fan motor cycling on the house heater will be the big user this month because of the consistently cold temps.

 

[70Chevy]

I'm guessing the "Keep" from Canada is going to have closer weather temps to me in Michigan than Falcon67 in Texas. I'm really interested in real world billing.

 

[1jjpop]

With a G-73 heater installed in a 18 x 22 garage with 7' sidewalls. walls ,ceiling, & doors insulated.doors kept closed. With the G-73 set at the lowest setting, what would the temperture be ????? 35 or 45 ?? Thank you..

 

[PCO6]

Keep - Did you purchase your G73 heater from a Canadian supplier?

 

[Falcon67]

I'm guessing the "Keep" from Canada is going to have closer weather temps to me in Michigan than Falcon67 in Texas. I'm really interested in real world billing.

I dunno, maybe. It was 76 here the Tuesday before Christmas, after that it has hit low 50s maybe twice for highs. Snowed twice, which almost never happens this time of year. 20s at night, 30F this AM with fog. We've been off for two weeks - weather has been really raw. If it warms up next week when we go back to work, I'm gonna be pissed. Last year at this same time we had great weather - could paint, rework, etc. Not this year.

 

[Dan0myte]

Keep - Did you purchase your G73 heater from a Canadian supplier?

I did some calling around and found that my local Acklands Grainger had G73's in stock. $349.99.

 

[PCO6]

I did some calling around and found that my local Acklands Grainger had G73's in stock. $349.99.

Thanks Dan. I tried on line and came up empty. We have an AG close by so I'll give them a call. Thanks again.

 

[Cobra4B]

I thought this was going to be a tread about this...

 

[Falcon67]

More precise notes - Did some timing this evening while working in the shop. The heater ran an average of 3 times an hour. Shop temp 65, outside temp was around 40 down to low 30s. Over a 2 hour window, the unit ran a total of 34 minutes. Four 5 minute cycles with two 7 minute cycles in there somewhere.

 

[rickairmedic]

70Chevy my weather may be closer to yours . I dont have the G73 I have the Dayton 3VU36 which is slightly more powerfull than the G73 and also portable . I picked mine up on friday from Grainger . Our temps have been in the 20*F area with wind chills in the single digits all weekend " it is currently 22*F with a windchill of 11*F outside" and with the heater set about halfway between low and high ( medium ) the garage is a balmy 65* F . my garage is 21'X28' it is all drywalled but the walls have no insulation in them ( house built in 1965 ) . The ceiling has minimal insulation and I have R4.2 insulation added to my non insulated garage door . I am a happy camper with this heater and I own an HVAC company . I do plan to add a mini split system to the garage next summer but cant complain one bit about the 3VU36's ability to keep the garage toasty even when the windchill outside is in the negative 0*F range .


http://www.drillspot.com/products/51637/Dayton_3VU36_Heater


Rick

 

[70Chevy]

70Chevy my weather may be closer to yours . I dont have the G73 I have the Dayton 3VU36 which is slightly more powerfull than the G73 and also portable . I picked mine up on friday from Grainger . Our temps have been in the 20*F area with wind chills in the single digits all weekend " it is currently 22*F with a windchill of 11*F outside" and with the heater set about halfway between low and high ( medium ) the garage is a balmy 65* F . my garage is 21'X28' it is all drywalled but the walls have no insulation in them ( house built in 1965 ) . The ceiling has minimal insulation and I have R4.2 insulation added to my non insulated garage door . I am a happy camper with this heater and I own an HVAC company . I do plan to add a mini split system to the garage next summer but cant complain one bit about the 3VU36's ability to keep the garage toasty even when the windchill outside is in the negative 0*F range .


http://www.drillspot.com/products/51637/Dayton_3VU36_Heater


Rick

Thanks for the info Rick.

Brian